Manufacture
Gears are most commonly produced via hobbing, but they are also shaped, broached, and cast. Plastic gears can also be injection molded; for prototypes, 3D printing in a suitable material can be used. For metal gears the teeth are usually heat treated to make them hard and more wear resistant while leaving the core soft and tough. For large gears that are prone to warp, a quench press is used.
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Famous quotes containing the word manufacture:
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—Robert Tusker, and Michael Curtiz. Wells (Preston Foster)
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—Elizabeth Stuart Phelps (1844–1911)